Reply to thread

Message: [QUOTE="crsublette, post: 165142, member: 3847"] [URL="http://www.koiphen.com/forums/showthread.php?110438-Man-vs-Pond&p=2137104&highlight=foam#post2137104"]3 column FF example.[/URL] Personally, I think it is purely the agitation of the water running down the bio-media through the column is what determines its effectiveness and pushing water at a higher flow rate downward would reduce its effectiveness since it becomes more like a waterfall rather than a device to produce bubbles. So, if the column is shorter, then flow rate can't be as high through it. [/QUOTE]